Portal:Poland/Selected article/3
The Polish September Campaign was the conquest of Poland by the armies of Nazi Germany, the Soviet Union and a small contingent of Slovak forces during World War II. The campaign began on 1 September 1939 following a German-staged attack in Gleiwitz (Gliwice). This military operation, which saw the first use of Blitzkrieg tactics, marked the start of World War II in Europe as the invasion led Poland's allies, including the United Kingdom and France, to declare war on Germany on 3 September. On 17 September, the Soviet Red Army invaded the eastern regions of Poland. The Soviets were acting in coöperation with Germany, realizing the secret protocol of the Molotov–Ribbentrop Pact which envisaged division of Central Europe into Nazi and Soviet spheres of influence. The campaign ended on 6 October 1939 with Germany and the Soviet Union occupying the entirety of Poland. (Full article...)